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Change Car Water Pump

Easy 2h00–6h00 ~200–600£
Estimated time 2h00–6h00
Estimated labour cost ~200–600£
Difficulty Easy

What is the function of a Mercedes-Benz GL water pump?

The water pump circulates the coolant through the engine and radiators. Together with the thermostat, it maintains the engine within its operating temperature range. Most engines have a mechanical water pump driven by the timing belt or an accessory belt.

When should you change the Mercedes-Benz GL water pump?

If the water pump is driven by the timing belt, it is strongly recommended to replace it at the same time as the timing belt kit. Signs of failure include: coolant leak from the pump weep hole, grinding or whining noise, engine overheating.

Is it difficult to change the Mercedes-Benz GL water pump?

Difficulty level 2/5: technically easy if replaced as part of a timing belt kit change. If replaced independently, the timing belt must be removed and refitted, requiring engine timing tools.

2 models covered

Model Year Range Engines covered Fuel
GL 2006-2011 2006-2011 320 CDI 4MATIC Diesel (642.940), 350 BlueTEC 4MATIC Diesel (642.820), 350 CDI 4MATIC Diesel (642.822), 350 CDI 4MATIC Diesel (642.940), 420 CDI 4MATIC Diesel (629.912), 450 4MATIC Petrol (273.943), 450 4MATIC, -LPG LPG,Petrol (273.923), 450 CDI 4MATIC Diesel (629.912), 500/550 4… Diesel, LPG, Petrol
GL 2012-2015 2012-2015 350 CDI 4MATIC, BlueTEC Diesel (642.826), 400 4MATIC Petrol (276.821), 500/550 4MATIC Petrol (278.928), 63 AMG Petrol (157.982) Diesel, Petrol